diff options
Diffstat (limited to '1938/CH5/EX5.10/5_10.sce')
| -rwxr-xr-x | 1938/CH5/EX5.10/5_10.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/1938/CH5/EX5.10/5_10.sce b/1938/CH5/EX5.10/5_10.sce new file mode 100755 index 000000000..dda1cb11e --- /dev/null +++ b/1938/CH5/EX5.10/5_10.sce @@ -0,0 +1,19 @@ +clc,clear
+printf('Example 5.10\n\n')
+
+VA=125*10^3
+V_L=400,V_ph=V_L/sqrt(3)
+I_L=VA/(sqrt(3)*V_L)
+I_aph=I_L
+
+I_f=4,I_asc=I_aph/2 //for half load.. refer to graph
+V_OC_line=140
+V_OC_ph=V_OC_line/sqrt(3)
+I_asc_ph=I_asc
+Z_s= V_OC_ph/I_asc_ph
+R_a=0.1,X_s=sqrt(Z_s^2-R_a^2) //armature resistance and synchronous reactance
+
+phi=acos(0.8)
+E_ph = sqrt((V_ph*cos(phi)+I_asc*R_a)^2 +(V_ph*sin(phi)- I_asc*X_s)^2)
+regulation=100*(E_ph-V_ph)/V_ph
+printf('Voltage regulation at 0.8 pf leading for half load is %.2f percent\n',regulation)
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